<p>高德地图-demo</p>
<div class="map-container" id="container" tabindex="0"></div>
<div *ngIf="aMap">
  <div>
    zoom: map.getZoom() value: {{ aMap.getZoom() }}
  </div>
  <div>
    center: map.getCenter() value: {{ aMap.getCenter() }}
  </div>
</div>